DM300014 Microchip Technology, DM300014 Datasheet - Page 35
DM300014
Manufacturer Part Number
DM300014
Description
BOARD DEMO DSPICDEM 1.1 GEN PURP
Manufacturer
Microchip Technology
Datasheet
1.DM300014.pdf
(72 pages)
Specifications of DM300014
Processor To Be Evaluated
PIC30F
Data Bus Width
16 bit
Interface Type
RS-485, CAN, SPI
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
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2003 Microchip Technology Inc.
Figure 3-7 depicts the flow of data from the time the analog input is converted by the
dsPIC30F device to the time the frequency is estimated.
FIGURE 3-7:
Figure 3-8 shows the frequency response of the IIR filter implemented on the
dsPIC30F. The IIR filter is only employed for demonstrating filter operation.
FIGURE 3-8:
Generated
Sinewave
x
1
(t)
Demonstration Program Operation
Advance Information
DSP OPERATIONS FLOW DIAGRAM
FREQUENCY RESPONSE: IIR FILTER
Low-Pass
To display
on LCD
Filter
x
2
(t)
Magnitude
computation &
peak-frequency
detection
8 kHz sampling
A/D Converter
12-bit,
x[n]
DS70099B-page 31
IIR/FIR filter
Bandpass
T
FILT
FFT
T
256
X
FFT
2
y[n]
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